Sprocket-gearing



(No Mo.del.)`

T. B. DYSART. PROUKET GEARING.

PatentedApr. 9, 1895.

w 3 w Z UNITED STATES PATENT i OFFICE.

THOMAS B. DYSART, OF SUPERIOR, NEBRASKA.

SPROCKET-GEARING.

vSPEGIFICAL'ION forming part of Letters Patent No. 537,185, dated April9, 1895.

Application filed October 23, 1894. Serial No. 526,782. (No model.)

To all whom it may concern:

Be it known that I,THoMAs B. DYsART, a citizen of the United States,residing at Superior, county of N uckolls, and State of Nebraska, haveinvented a new and useful Sprocket- Gearing, of which the following is aspecification.

My invention relates to an ixnprovernent in sprocket gearing and theobject of my invention is to provide ,a sprocket chain and chain wheelof simple and durable construction. I attain this object by themechanism illustrated in the accompanying drawings, in whichw Figurel isthe sprocket chain. Fig. 2 is the sprocket wheel; and Fig. 3 is anenlarged view of a portion of the sprocket Wheel rim showing the teeth.i

The sprocket chain link is constructed with a hook, "k at one end and aneye, 'rn at the other end, that portion of the link forming the eyehaving a flattened portion at one side, 0 to permit of the passing overit of the hook of the next link. In the center of the link are twocross-bars 'n, **n placed at right angles to each other and arrang'ed inthe respective planes of theV hook and eye.

The sprocket wheel C is construeted with a groove 19, in the center of,the inner rim and a row of teeth, (1 oppositely disposed on each side ofsaid groove, said teeth being conoave at one of their inner corners, "rfor the purpose of affording elearance fot' the chain joints. The saidsprocket ehain is carried by said chain wheel between the rows of teeth,one of the cross-bars of the chain link catching on the teeth and theother cross-bar extending into the groove 102,

What I elaim as my invention, a'nd desire to secure by Letters Patent,is-

1. A sprocket wheel having a groove in the center of its inner rim and arow of teeth being each concaved at one of their inner corners for thepurpose of affording clearance for the chain joints.

2. A sprocket chain link constructed with a hook at one end and an eyeat the other end that part of the link fortning the eye having aflattened portion at one side to permit of the passage over it of thehook of the next link and two cross-bars placed at right angles to eachother in the center of the link and arranged in the respective planes ofthe hook and eye.

THOMAS B. DYSART. Witnesses: i

W. F. BUCK,

C. B; MoCoNNELL;

